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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
jetting sensitivity
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[QUOTE="OLD-N-SLOW, post: 690452, member: 20649"] I must reply. If for no other reason that to disagree with CC,(for a change). Ok. Here is my take, for what its worth. When the weather is warm and the bike is cold, it takes a a/f mixture that is leaner than when the weather is cold. Cold air means more oxygen thus leaning the a/f mixture whitch is why your bike is harder to start in the cold, because more fuel is needed to compensate. So, the runaway idle is caused when the air is cold because your a/f is closer to what your bike wants. The high idle goes down when the bike is warm because the a/f is now richer than it needs. This situation to me says your pilot is still a little rich.I do not think a 35 pilot is out of the question. May be even a 33. BUT... heres the big catch. Jet your bike to run good warm!! Who cares what it runs like cold. You dont ride a cold bike,, well for more than 2 min. or so.(Its warm by then). I run a 35 pilot and would try a 33 if i had one. The low speed 4 stoking does not bother me enough to buy a jet. So, in summary, when you start a cold bike in the cold , and it has a runnaway idle but slows to normal as the engine warms, that tells me the pilot is to big. Remember though, jet for how the bike runs , not how it starts. Steve [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
jetting sensitivity
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